Matches in SemOpenAlex for { <https://semopenalex.org/work/W2077684344> ?p ?o ?g. }
Showing items 1 to 82 of
82
with 100 items per page.
- W2077684344 abstract "Purpose: Real time adaptive radiotherapy of lungtumours is a promising application of the proposed hybrid Linac‐MR system. Several linac‐MR designs use low magnetic field strength (0.2T and 0.5T) imaging. Rapid real time imaging is potentially challenging due to the limited available contrast to noise ratio (CNR), especially at low MR fields. The goal of this phantom study is to quantitatively evaluate our in‐house tumour tracking algorithm with images of a moving lungtumour model with CNR equivalent to those obtained at 0.2T and 0.5T.Methods: A chest phantom with a moving lung compartment capable of 1D programmable motion is built. The lung compartment is loaded with mixtures containing MnCl2 and CuSO4 that simulates lung tumour/ healthy lungtissue by mimicking their relaxation properties at 0.2Tand 0.5T in the available 3T scanner. CNR of the acquired images is scaled down to 0.2T and 0.5T by addition of Gaussian noise. Dynamic bSSFP images (4 frames/s) are acquired with the lung compartment undergoing a series of pre‐programmed motion pattern based on patient data. An optical encoder is used to provide an independent reference measurement of phantom position while the lung compartment undergoes motion. In‐house automatic tumour tracking software is used to contour the tumour off‐line. The automatic contours are compared against user defined contours by evaluation of the centroid position error, and the Dice coefficient.Results: The average RMS errors of the contour centroids are 0.9 at both CNR levels Conclusions: Our auto‐contouring algorithm is able to accurately track a moving tumour with the limited CNR available from real time, low field MR sequences." @default.
- W2077684344 created "2016-06-24" @default.
- W2077684344 creator A5047333970 @default.
- W2077684344 creator A5049802679 @default.
- W2077684344 creator A5056202745 @default.
- W2077684344 creator A5078790371 @default.
- W2077684344 creator A5081353402 @default.
- W2077684344 date "2011-06-01" @default.
- W2077684344 modified "2023-09-25" @default.
- W2077684344 title "SU-E-J-83: Feasiblity of Real Time Tumour Tracking in Low Field MRI - A Phantom Study" @default.
- W2077684344 doi "https://doi.org/10.1118/1.3611851" @default.
- W2077684344 hasPublicationYear "2011" @default.
- W2077684344 type Work @default.
- W2077684344 sameAs 2077684344 @default.
- W2077684344 citedByCount "0" @default.
- W2077684344 crossrefType "journal-article" @default.
- W2077684344 hasAuthorship W2077684344A5047333970 @default.
- W2077684344 hasAuthorship W2077684344A5049802679 @default.
- W2077684344 hasAuthorship W2077684344A5056202745 @default.
- W2077684344 hasAuthorship W2077684344A5078790371 @default.
- W2077684344 hasAuthorship W2077684344A5081353402 @default.
- W2077684344 hasConcept C104293457 @default.
- W2077684344 hasConcept C115961682 @default.
- W2077684344 hasConcept C121332964 @default.
- W2077684344 hasConcept C121684516 @default.
- W2077684344 hasConcept C146599234 @default.
- W2077684344 hasConcept C154945302 @default.
- W2077684344 hasConcept C15744967 @default.
- W2077684344 hasConcept C19417346 @default.
- W2077684344 hasConcept C2775936607 @default.
- W2077684344 hasConcept C2779104521 @default.
- W2077684344 hasConcept C2779751349 @default.
- W2077684344 hasConcept C2989005 @default.
- W2077684344 hasConcept C31972630 @default.
- W2077684344 hasConcept C41008148 @default.
- W2077684344 hasConcept C55020928 @default.
- W2077684344 hasConcept C71924100 @default.
- W2077684344 hasConcept C86190813 @default.
- W2077684344 hasConceptScore W2077684344C104293457 @default.
- W2077684344 hasConceptScore W2077684344C115961682 @default.
- W2077684344 hasConceptScore W2077684344C121332964 @default.
- W2077684344 hasConceptScore W2077684344C121684516 @default.
- W2077684344 hasConceptScore W2077684344C146599234 @default.
- W2077684344 hasConceptScore W2077684344C154945302 @default.
- W2077684344 hasConceptScore W2077684344C15744967 @default.
- W2077684344 hasConceptScore W2077684344C19417346 @default.
- W2077684344 hasConceptScore W2077684344C2775936607 @default.
- W2077684344 hasConceptScore W2077684344C2779104521 @default.
- W2077684344 hasConceptScore W2077684344C2779751349 @default.
- W2077684344 hasConceptScore W2077684344C2989005 @default.
- W2077684344 hasConceptScore W2077684344C31972630 @default.
- W2077684344 hasConceptScore W2077684344C41008148 @default.
- W2077684344 hasConceptScore W2077684344C55020928 @default.
- W2077684344 hasConceptScore W2077684344C71924100 @default.
- W2077684344 hasConceptScore W2077684344C86190813 @default.
- W2077684344 hasLocation W20776843441 @default.
- W2077684344 hasOpenAccess W2077684344 @default.
- W2077684344 hasPrimaryLocation W20776843441 @default.
- W2077684344 hasRelatedWork W1153688227 @default.
- W2077684344 hasRelatedWork W1963520986 @default.
- W2077684344 hasRelatedWork W2007597011 @default.
- W2077684344 hasRelatedWork W2020073831 @default.
- W2077684344 hasRelatedWork W2024697164 @default.
- W2077684344 hasRelatedWork W2037304699 @default.
- W2077684344 hasRelatedWork W2040506794 @default.
- W2077684344 hasRelatedWork W2046121676 @default.
- W2077684344 hasRelatedWork W2048528524 @default.
- W2077684344 hasRelatedWork W2072249670 @default.
- W2077684344 hasRelatedWork W2089045619 @default.
- W2077684344 hasRelatedWork W2460323719 @default.
- W2077684344 hasRelatedWork W2466944239 @default.
- W2077684344 hasRelatedWork W2531497949 @default.
- W2077684344 hasRelatedWork W2898447419 @default.
- W2077684344 hasRelatedWork W2972106764 @default.
- W2077684344 hasRelatedWork W3012722377 @default.
- W2077684344 hasRelatedWork W3024712122 @default.
- W2077684344 hasRelatedWork W3100338223 @default.
- W2077684344 hasRelatedWork W3209087919 @default.
- W2077684344 isParatext "false" @default.
- W2077684344 isRetracted "false" @default.
- W2077684344 magId "2077684344" @default.
- W2077684344 workType "article" @default.